Scale Reading Practical

The first section of slides show actual examples of scales from Tweed fish.

A picture of the juvenile stage is followed by a picture of the adult stage for the same fish.

Boleside 05/05/2007 65cm 5lb

3.

Boleside 05/05/2007 65cm 5lb

Can’t use the centre on this scale, but can still get the sea age from it x.2

Upper Mertoun 24/03/2007 69cm 7.5lb

2+. or 3.

Upper Mertoun 24/03/2007 69cm 7.5lb

Clue: Look at the date! .2

The Junction 10/03/2007 81cm 14lb

1ro.

or

1+.

The Junction 10/03/2007 81cm 14lb

.3Not all 3 Sea-winter fish are large

Lower Lees 27/04/2007 61cm 5.75lb

2.

Lower Lees 27/04/2007 61cm 5.75lb

+

.2+ open

Boleside 28/07/2007 78cm 9lb

2.

Boleside 28/07/2007 78cm 9lb

+ ( O or Cl ) ?

.2+ o or cl

Ravenswood 20/08/2007 68cm 6.75lb

+ / RO

3+.

68cm 6.75lb

Ravenswood

20/08/2007

Clue: Caught in August but look at the Erosion

There are two definite winters –but what next? The plus growth after the second Winter seems to be heavily closing but Summer fish should be “Open” at the edges. The erosion shows however that this fish came in a long time before August. The most likely explanation is that this is a very small, 3SW Springer. Again, not all 3SW fish are large

?

Upper Mertoun 18/09/2007 59cm 4lb

3.

check

59cm 4lbUpper Mertoun 18/09/2007

.1+o

+

• The next 4 slides are from the same fish.

The Junction 20/07/2007 63cm 6lb

13.

The Junction 20/07/2007 63cm 6lb

2SM

The Junction 20/07/2007 63cm 6lb

3

“Overgrowth” is a good sign of a SM

The Junction 20/07/2007 63cm 6lb

4

+ ?

% open vs % closed at edge

3.1+SM+ / 3.1+SM.1

+

The Junction 27/11/2007 84cm 15lb

1+. / 1ro.

The Junction 27/11/2007 84cm 15lb

Checks: The main problem for scale reading

Gardo 04/09/2007 70cm 8.3lb

2.

Gardo 04/09/2007 70cm 8.3lb

.1+o

+

Gardo 10/09/2007 84cm 11.8lb

1+.

Gardo 10/09/2007 84cm 11.8lb

.2+cl

cl

+

Brora, 2¾ lbs 16-04-1924

4.1+

+

Spey, 2½ lbs, 19-05-1922

3.1+

+

Spey, 3lbs, 31-05-1922

4.1+

+

Findhorn, 8½ lbs, 17-04-1923

2.2

Spey, 11lbs, 20-03-1924

3.2

Tweed, 2lbs, 17-02-1927

2.2

Dee, 10½ lbs, 30-05-1922

2.2+

+

Spey, 35lbs, 29-05-1923

2.3++

Spey, 9lbs, 13-03-1925

x.1+SM.1

x

Ewe, 26lbs, 06-07-1923

x.1+ SM.1+

x

+

Spey, 14½ lbs, 29-11-1922

2.1+SM.SM+

+

Brora, 2¾ lbs 16-04-1924

4.1+

+